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Question-1 The speed of a homogenous solid sphere after rolling down an inclined plane of vertical height h from rest without sliding is _____.

(A)	(B)√gh
(C)	(D)

Question-2
A uniform rod of length l and mass m is free to rotate in a vertical plane about A. The rod initially in horizontal position is released. The initial angular acceleration of the rod is (Moment of inertia of rod about A is ml^2/3)

(A) 3g/2l	(B)2l/3g
(C)3g/2l2	(D)mg ½

Question-3
The angular momentum of a body with mass ( m) moment of inertia ( I ) and angular velocity ( ω ) rad/s is equal to ____.

(A) I_ω	(B) I_ω2
(C) ^I/_ω2	(D) ^I/_ω

Question-4
ABC is a triangular plate of uniform thickness. The sides are in the ratio shown in the figure. I _AB – I _BC and I _CA are the moments of inertia of the plate about AB, BC and CA as axes respectively. Which one of the following relations is correct ?

(A) I _AB > I_BC	(B) I_BC > I _AC
(C) I _AB + I _BC = I_CA	(D) I _CA is maximum

Question-5 A couple produces _______.

(A) No motion	(B)Linear and rotational motion
(C)Purely rotational motion	(D)Purely linear motion

Question-6 A ball of mass 0.25 kg attached to the end of a string of length 1.96 m is moving in a horizontal circle. The string will break if the tension is more than 25 N. What is the maximum speed with which the ball can be moved ?

(A) 14 m/s	(B)3 m/s
(C)3.92 m/s	(D)5 m/s

Question-7 A thin circular ring of mass M and radius r is rotating about its axis with a constant angular velocity ω. Two objects each of mass m are attached gently to the opposite ends of diameter of the ring. They will now rotate with an angular velocity.

(A)	(B)
(C)	(D)

Question-8
Two bodies of mass 1 kg and 3 kg have position vectors respectively. The centre of mass of this system has a position vector

(A)	(B)
(C)	(D)

Question-9 A flywheel rotating about a fixed axis has a kinetic energy of 360J when its angular speed is 30 rad/s. The moment of inertia of the wheel about the axis of rotation is _______.

(A) 0.6 kgm²	(B)0.15 kgm²
(C)0.8 kgm²	(D)0.75 kgm²

Question-10 A particle of mass M is revolving along a circle of radius R and another particle of mass m is revolving in a circle of radius r. If time periods of both particles are same, then the ratio of their angular velocities is

(A) 1	(B)^r/_R
(C)^R/_r	(D)

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Plus 1 Biology Science

CBSE

Practice in Related Chapters
Units and Measurements
Motion in a Straight Line
Laws of Motion
Mechanical Properties of Solids
Motion in a Plane
Waves
Gravitation
Thermodynamics
Thermal Properties of Matter
Work,Energy and Power
Kinetic Theory
System of Particles and Rotational Motion
Oscillations
Mechanical Properties of Fluids

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